37 CFR 7.3 : Patents, Trademarks, And Copyrights (Section 2.11 To Chapter V) — United States Patent And Trademark Office, Department Of Commerce (Parts 1 - 199) (Section 2.11 To Parts 151-199) — Unknown Title (Parts 2 - 90) (Section 2.11 To Section 90.3) — Rules Of Practice In Filings Pursuant To The Protocol Relating To The Madrid Agreement Concerning... (Section 7.1 To Section 7.41) — General Information (Section 7.1 To Section 7.7) — Correspondence must be in English.
31 Dec 2014
International applications and registrations, requests for extension of protection and all other related correspondence with the Office must be in English. The Office will not process correspondence that is in a language other than English.